Weight on other planets calculator
Enter your weight on Earth in any unit – kilograms, pounds or stones – and see what a scale would show on the Moon, on each planet of the Solar System, on Pluto and on the Sun. Your mass stays the same; only the pull of gravity changes.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Enter your weight as your scale shows it on Earth: 70 for 70 kg, 154 for 154 lb.
- Pick the world you are curious about – the result appears at the top, with its gravity.
- The list below shows the same weight on every other world in the same unit.
Weight there = weight on Earth × g ÷ 9.80665
where g is the surface gravity of the planet or moon in m/s² and 9.80665 m/s² is standard gravity on Earth.
Worked example
You weigh 70 kg on Earth. On Mars g = 3.72 m/s²:
70 × 3.72 ÷ 9.80665 = 26.6 kg
On the Moon, 70 × 1.62 ÷ 9.80665 = 11.6 kg; on Jupiter, 70 × 24.79 ÷ 9.80665 = 177 kg. For 154 lb the Moon gives 25.4 lb and Mars 58.4 lb.
Good to know
- On the Sun the numbers are only a thought experiment: 70 kg would read 1,955.8 kg.
- Gravity varies a little over each surface (with latitude, altitude and spin), so these are representative figures, not exact ones for every spot.
- The same ratio works for anything you weigh: a 20 kg suitcase weighs 3.3 kg on the Moon.
Frequently asked questions
How much would I weigh on the Moon?
About one sixth of your Earth weight. The Moon's surface gravity is 1.62 m/s² against 9.80665 m/s² on Earth, a ratio of 0.165, so 70 kg on a bathroom scale reads 11.6 kg on the Moon.
Why does my weight change but not my mass?
Mass is the amount of matter in you and is the same everywhere. Weight is the force gravity pulls with, mass × g. A scale calibrated on Earth turns that force back into kilograms or pounds, so on Mars it shows 0.379 of your Earth reading.
How can you stand on Jupiter or Saturn?
You cannot – the gas giants have no solid surface. Their surface gravity is quoted at the level where the atmospheric pressure is 1 bar, about the pressure at sea level on Earth, and that is the value used here.
Which gravity values are used?
Surface gravity at the equator in m/s², as commonly quoted from NASA fact sheets: Sun 274, Mercury 3.7, Venus 8.87, Moon 1.62, Mars 3.72, Jupiter 24.79, Saturn 10.44, Uranus 8.69, Neptune 11.15, Pluto 0.62. Earth is the standard 9.80665 m/s².
Why is Saturn's gravity close to Earth's when it is so much bigger?
Surface gravity grows with mass but falls with the square of the radius. Saturn has about 95 times Earth's mass but is also very wide and not dense, so at its 1-bar level the pull is only about 6 % stronger than on Earth.